Haier HL42T Service Manual Download Page 2

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WARNING

This service information is designed for experienced repair technicians only and is not designed for use

by the general public. It does not contain warnings or cautions to advise non-technical individuals of

potential dangers in attempting to service a product. Products powered b electricity should be serviced

or repaired only by experienced professional technicians. Any attempt to service or repair the product

deal with in this service information by anyone else could result in serious injury or death

Summary of Contents for HL42T

Page 1: ...1 HL42T TV 8888 125 ...

Page 2: ... warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered b electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product deal with in this service information by anyone else could result in serious injury or death ...

Page 3: ... 5 2 Back panel controls 24 5 3 Setting Up Your Remote Control 25 6 DISASSEMBLY INSTRUCTIONS 26 Remove the two screws take out the remote control board 26 6 1 whole machine 27 6 2 Back cover subassembly 27 6 3 Screen bracket subassembly 28 6 4 Front frame subassembly 28 6 5 Wire subassembly Connection Sketch Interpretat 29 6 5 1 Wire Photo 29 6 5 2 Components List 29 7 MEASUREMENTS AND ADJUSTMENTS...

Page 4: ...o not use your TV near water For example do not use it near a bath tub wash bowl kitchen sink laundry tub in a wet basement or near a swimming pool Cleaning Unplug your TV before cleaning Do not use liquid or aerosol cleaners Use only a damp cloth to clean the exterior of your TV Ventilation Slots and openings in the cabinet and the back or bottom are provided for ventilation reliable operation an...

Page 5: ... from lightning and power line surges Servicing Do not attempt to service your TV yourself because opening or removing covers may expose you to angerous voltage or other hazards Refer all servicing to qualified service personnel Replacement parts When replacement parts are required make sure that the service technician uses replacement parts specified by the manufacturer that have the same charact...

Page 6: ...sistors which provide exceptionally sharp video quality Occasionally a few non active pixels may appear on the screen as a fixed blue green or red point These non active pixels do not adversely affect the performance of your TV and are not considered defects 2 Specification Model ＨＬ４２Ｔ Screen size 42inch Aspect ratio 16 9 Resolution 1920X1080 Response Time ms 8 GRAY TO GRAY Angel of view 1780 Colo...

Page 7: ...ts number Description A Board Power supply Board B Board Main Board C Board MTK 8280 board 3 2 Main Board 3 2 1 Function Description Main Board Process signal which incept from exterior equipment then translate into signal that panel can display Signal flowing chart ...

Page 8: ...8 3 2 2 Connector definition MTk5380 ...

Page 9: ...er Signal name Description 1 5V Supply the Power of bright and IR receiver 2 IR Receive IR signal 3 G Show green when TV standby 4 B Show blue when TV working 5 GND Ground 6 NC NC Pin number Signal name Description 1 GND Ground 2 AD0 Control Power CH CH 3 AD1 Control Menu V V INPUT Pin number Signal name Description 1 BKANJ Control the backlight of pannel 2 BKEN The system turn on or turn off the ...

Page 10: ...8 A1N 3 LVDS VDD 11 Not use 19 A2P 4 LVDS VDD 12 Not use 20 A2N 5 Not use 13 A0P 21 GND 6 Not use 14 A0N 22 GND 7 GND 15 GND 23 CK1P 8 GND 16 LVDS_SEL 24 CK1N Pin number Signal name 25 A3P 26 A3N 27 GND 28 GND 29 Not use 30 Not use Pin number Signal name Description 1 18V Power of Audio power amp 2 18V Power of Audio power amp 3 GND Ground 4 GND Ground Pin number Signal name 1 L 2 L 3 R 4 R ...

Page 11: ...d Panel and DC DC power board 3 3 2 Connector definition CONNECTOR CN2 CN3 CONNECTOR CN5 CONNECTOR CN4 CN2 CN3 Signal name 1 24V 2 24V 3 24V 4 24V 5 24V 6 GND 7 GND 8 GND 9 GND 10 GND CN5 Signal name 1 12V 2 GND CN4 Signal name 1 ON OFF 2 GND 3 5VSB 4 GND 5 GND 6 12V 7 12V ...

Page 12: ...12 3 4 LCD PANEL 3 4 1 Function Description Display the signal 3 4 2 Connector definition ...

Page 13: ...13 ...

Page 14: ... INSTRUCTIONS 4 1 External Equipment Connections Accessories Antenna Connection Generally speaking to enjoy a clearer picture we recommend that you use a CATV system or an outdoor antenna location and antenna positioning ...

Page 15: ...V Choose Your Connection There are several ways to connect your television depending on the components you want to connect and the quality of the signal you want to achieve The following are examples of some different ways to connect your TV with different input sources VCR connection ...

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Page 20: ...tput resolution appropriately To get the best picture quality adjust the output resolution of the source device to 1280x720p Select HDMI input source in input source option of Select Main source menu When the source device DVD player or Set Top Box supports DVI How To Connect 1 Connect the source device to HDMI port of this TV with a HDMI to DVI cable not supplied with this product 2 A separated a...

Page 21: ...21 Cable sample HDMI Cable not supplied with the product HDMI to DVI Cable not supplied with the product Analog Audio Cable Stereo to RCA type not supplied with the product ...

Page 22: ...22 Power source Removing the table stand and installing a wall mount bracket ...

Page 23: ...e as left right buttons 4 CH Press to scan through channels To scan quickly through channels press and hold down either In the MENU screen these buttons serve as up down buttons 5 POWER Press to turn on and off the TV 6 AV2 AUDIO IN Connect to hear stereo sound from an external device 7 HDMI3 IN Connect a signal from an external device to HDMI 8 AV2 VIDEO IN Connects the video signal from a video ...

Page 24: ...nnect digital audio from an external device NOTE In standby mode these ports will not work 8 VIDEO Out Connect the second TV or monitor to the TV s AV OUT 9 AUDIO Out Connect the audio L R cables to the second TV s AV IN 10 VIDEO IN Connects the video signal from a video device 11 AUDIO IN Connect the audio L R cables from the Video signal source these jacks 12 S VIDEO IN Connect the S Video cable...

Page 25: ...e the remote control to shock or liquids Do not use the remote control in an area with high humidity Do not place the remote control in direct sunlight Do not place objects such as furniture between the remote control and the remote sensor The remote control may not work if direct sunlight or bright light shines on the remote sensor Either move your TV or change the angle at which you use the remo...

Page 26: ... four screw from the rear cover indicated with Then remove the pedestal 3 Remove the power module Remove the four screws indicated on the figure above by Then remove the power module 4 Remove the Main board Remove the five screws indicated on the figure above by Disconnected the coupler CNA1 CN1 CNE1 CNE2 CND1 CNC1 CNA2 Remove the Main board 5 Remove the remote control board Remove the two screws ...

Page 27: ... Name Description Parts number 1 Bagging of owner s manual 2 Bagging of whole machine 3 TV Set 3 1 Base subassembly 3 2 Back cover subassembly 3 3 Screen bracket subassembly 3 3 1 Screen bracket 3 3 2 Main board subassembly 3 3 3 PSU 3 4 LCD PANEL 3 5 Front frame subassembly 6 2 Back cover subassembly 1 2 NO Name Description Parts number 1 Back cover subassembly 2 1 Back cover 2 2 Side av label 2 ...

Page 28: ...ription Parts number 1 Screen bracket subassembly 2 Screen bracket 6 4 Front frame subassembly Components List NO Name Description Parts number 1 Front frame subassembly 2 Front frame 3 Right sound box assembly 4 Lift sound box assembly 5 Switch board 6 Key board ...

Page 29: ... 2 16P 400mm FI RC3 6 LVDS wire A2006TOP 2 400mm FI RC3 1B 7 LVDS wire A2006H00 2 16P 450MM A2006H 8 LVDS wire A2006H00 2 8P 450mm A2006H0 9 Side AV wire PH 5 300 PH 5 10 Speaker wire TJC3 4 300 400 SMP 2 SMP 2 11 MTK 8280 board power wire TJC3 4P 250mm TJC3 2P 12 Communicating wire 13 Amplifier power wire TJC3 4P 350mm TJC3 4P 7 MEASUREMENTS AND ADJUSTMENTS The way to the factory mode menu 1st pr...

Page 30: ...30 1 Version Info 2 Video 3 Audio ...

Page 31: ...31 4 Channel 5 Gamma 6 BackLight ...

Page 32: ...32 7 Function 8 BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8 1 BLOCK DIAGRAM 8 2 CIRCUIT DIAGRAM MTK5380 ...

Page 33: ... 8 x 1 12K 2 2K 5 1V HDMI2 MT5380P1 V2 V1 C 1 15 Wednesday January 30 2008 INDEX MAIN POWER NUSTC_5380P1_V2_FOR HAIER Title Size Document Number Rev Date Sheet of No 1 2 Innovation Rd 1 SBIP Hsin Chu City 300 Drawn 3V3SB 5VSB 12V OPWRSB 5V OIRI OPCTRL3 ADIN2 ADIN1 LED_GRE OPCTRL3 ADIN1 ADIN2 GND LED_GRE LED_RED ADIN2_K1 ADIN1_K0 LED_CTL LED OPWRSB OIRI IR_IN ADIN2_K1 ADIN1_K0 ON OFF GPIO_3 12V 5V ...

Page 34: ...96 DDR Termination SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 GND SD VSENSE VREF VDDQ AVIN PVIN VTT R519 100K R0603 SMD R2 2K R0603 SMD R1 110 R0603 SMD CB64 0 1uF C0603 SMD U11 LT1084 TO 252 3 TO 252 3 SMD 3 1 2 IN ADJ GND OUT R11 180 R0603 SMD C301 NC 100nF C0603 SMD U1 AZ1117 adj SOT223 SMD 1 2 3 0 ADJ GND OUT IN OUT CE33 470uF 16V C470UF16V D8H9 R5 750 R0603 SMD CB33 0 1uF C0603 SMD CB8 0 1uF C0603 SMD CE...

Page 35: ...D 1 2 3 IN GND OUT CB32 0 1uF C0603 SMD CE96 220uF 16V C220UF10V D6 3H7 R14 180 R0603 SMD CB228 0 1uF C0603 SMD CB197 0 1uF C0603 SMD R19 0 R0603 SMD C575 1uF C0603 SMD CB229 0 1uF C0603 SMD CE19 470uF 16V C470UF16V D10H9 CE22 100uF 16V C100UF16V D6 3H7 C573 1uF C0603 SMD CE83 100uF 16V C100UF16V D6 3H7 CE30 100uF 16V C100UF16V D6 3H7 U7 AZ1117 adj SOT223 SMD 1 2 3 0 ADJ GND OUT IN OUT CE28 100uF ...

Page 36: ...0K R0603 SMD R52 NS 100 R0603 SMD C21 5pF C0603 SMD R22 47K R0603 SMD R198 10K R0603 SMD R40 4 7K R0603 SMD C22 1uF C0603 SMD R27 1 R0603 SMD CB2 0 1uF H3 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 FB17 FB BEAD SMD 0603 R42 10 Q1 2N3904 SOT23 SMD 1 3 2 R199 NS 10K R0603 SMD R25 1K R0603 SMD CB70 0 1uF C0603 SMD R21 220 R0603 SMD Y1 60MHz CRYS 49US P4 88 R18 0 R0603 SMD R30 33 R0603 SMD R44 470 R...

Page 37: ...D or CVBS RF_AGC Mon NC or AFT NC or IF_AGC Mon NC or B2_Ana_ 5V TU_ 32V GND GND SCL SDA AS B_IF O P D_IF_AGC NC D_IF_O P_1 D_IF_O P_2 CB450 NS 100pF C0603 SMD C41 1uF C0603 SMD C42 0 01uF C0603 SMD C70 10nF C0603 SMD CE38 100uF 16V C100UF16V D6 3H7 R34 5 1K 1 R0603 SMD FB34 FB BEAD SMD 0805 R1159 220K R0603 SMD C75 10nF C0603 SMD QF1 2N7002LT1 SOT23 SMD 1 3 2 C57 4 7uF 10V C0805 SMD R1629 0 R0603...

Page 38: ...3 4 5 6 7 8 CA20 0 1uF C0603 SMD CA5 0 1uF C0402 SMD RA8 75 R0603 SMD RNA4 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 RA7 75 R0603 SMD RNA6 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 RA14 100 R0603 SMD CA27 0 1uF C0603 SMD UA1 16M x 16 DDR TSOP 66 TSOP66 SMD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 5...

Page 39: ...JTDI OIRI R1209 0 R0603 SMD R1257 NC 4 7K R0603 SMD R45 4 7K R0603 SMD R54 10K R0603 SMD R61 4 7K R0603 SMD U17 M25P16 NS CASON8 SMD 1 2 3 4 5 6 7 8 S_ Q W_ VPP VSS D C HOLD_ VCC R1703 100R R0603 SMD R1705 100R R0603 SMD R1227 NC 4 7K R0603 SMD CB452 0 1uF C0603 SMD CB52 0 1uF C0603 SMD R197 NC 10K R0603 SMD RN5 10K RN0603 SMD 1 2 3 4 5 6 7 8 CA36 4 7uF 10V C0805 SMD CA37 0 1uF C0603 SMD CB53 0 1u...

Page 40: ... 16V R2084 0 C17 4 7uF 10v C0805 SMD D211 PESD1206Q 140 PESD1206Q 140 SMD 1 2 3 4 5 6 7 8 R2116 68R R2050 0 C720 100nF R2113 100K R2092 100 NC R2065 1K NS R2080 47K C725 100nF CN2 HDMI HAIER 20 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 22 23 SHELL1 SHELL2 D2 D2 Shield D2 D1 D1 Shield D1 D0 D0 Shield D0 CK CK Shield CK CE Remote NC DDC CLK DDC DATA GND 5V HP DET SHELL3 SHELL4 R2081 100 NC ...

Page 41: ...C FB R1206 SMD R2103 10K Q9 2N3904 SOT23 SMD 1 3 2 R2106 100 Q29 2N3904 SOT23 SMD 1 3 2 R2096 NS 0 R123 100K R0603 SMD L132 FB R1206 SMD U76 AP1530 SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 FB EN OCSET Vcc O P O P Vss Vss CE72 100uF 16V C100UF16V D6 3H7 R2105 100 R401 10K R0603 SMD FB12 NC R1206 SMD Q28 2N3904 SOT23 SMD 1 3 2 C85 1uF C0603 SMD R2102 10K R2072 4 3K R0603 SMD U13C MT5380 SMD LQFP LQFP256 SMD 5...

Page 42: ...SMD CE648 10uF 10V R1206 C363 10nF C0603 SMD C353 15pF C0603 SMD R1640 75 R0603 SMD R1836 10K R0603 SMD R1636 68 R0603 SMD R1878 1K R0603 SMD C636 4 7uF 6 3V C0603 SMD R1842 10K R0603 SMD R36 22 R0603 SMD D157 NS EZJZ0V800AA ESD0603 SMD 1 2 R1831 75 R0603 SMD R1830 NC 0 R0603 SMD R153 20K R0603 SMD R1848 10K R0603 SMD D160 NS EZJZ0V800AA ESD0603 SMD 1 2 w red P76 RCA2X1 RCA2 HAIER 1 3 5 4 2 R1833 ...

Page 43: ...03 SMD C134 5pF C0603 SMD FB68 80 100MHz BEAD SMD 0603 C135 10nF C0603 SMD D31 NS EZJZ0V800AA ESD0603 SMD 1 2 R169 68 R0603 SMD R160 0 R0603 SMD R181 0 R0603 SMD R171 75 R0603 SMD R182 10K R0603 SMD C137 5pF C0603 SMD R161 0 R0603 SMD FB69 80 100MHz BEAD SMD 0603 w red P82 RCA2X1 RCA2 HAIER 1 3 5 4 2 C136 10nF C0603 SMD D23 NS EZJZ0V800AA ESD0603 SMD 1 2 C141 5pF C0603 SMD R196 0 R0603 SMD R166 10...

Page 44: ... 10K R0603 SMD R1592 100 R0603 SMD L34 0 L IND SMD 0603 C459 47pF C0603 SMD R1525 47 R0603 SMD R79 100 R0603 SMD D147 NS EZJZ0V800AA ESD0603 SMD 1 2 C111 NS 43pF C0603 SMD w red P80 RCA2X1 RCA2 HAIER 1 3 5 4 2 R1560 100 R0603 SMD C567 10nF C0603 SMD CB163 0 1uF C0603 SMD R1858 47 R0603 SMD R1882 1K R0603 SMD CB162 0 1uF C0603 SMD CE47 470uF 16V C470UF16V D10H9 C536 47pF C0603 SMD D197 NS EZJZ0V800...

Page 45: ... ASPDIF 10 12V 1 3 9 10 14 15 OFF_MUTE 14 AOLRCK 7 AOBCK 7 GPIO_ 4 11 4 8 9 14 15 OPCTRL1 4 11 3V3SB 1 2 4 7 8 9 AR2 14 AL2 14 HPDET 14 AIN3_L 10 AIN3_R 10 5VSB 1 2 11 15 GND 1 2 3 4 5 6 7 8 9 10 11 12 14 15 A0SDATA0 9 AOMCLK 9 AV33 AV33 AV33 AV33 AV33 3V3SB CB171 0 1uF C0603 SMD U13G MT5380 SMD LQFP LQFP256 SMD 5380 179 178 177 176 175 174 173 172 171 183 181 182 180 203 200 201 202 198 188 187 1...

Page 46: ... 6 3V C0603 SMD CE21 220uF 16V C220UF16V D6H11 C659 4 7uF 6 3V C0603 SMD CE20 220uF 16v C220UF16V D6H11 R1800 10K R0603 SMD C40 1uF C0603 SMD C167 2 2nF R64 R1766 20K R0603 SMD CB981 0 1uF C0603 SMD R1767 20K R0603 SMD D16 NS 1N4148 1N4148 SMD C170 10uF 6 3V R1206 C702 4 7uF 6 3V C0603 SMD C660 4 7uF 6 3V C0603 SMD C35 1uF C0603 SMD R1867 20K R0603 SMD C585 1uF C0603 SMD R279 470 R0603 SMD R1616 1...

Page 47: ...Ohm_2A R1206 SMD 1 2 R17724 7K R0603 SMD R1781 4 7K_DNS R0603 SMD C681 0 22uf C0603 SMD C665 0 22uf C0603 SMD R1785 470 R0603 SMD 1 2 R1773 39K R0603 SMD R1777 4 7K R0603 SMD CE630 47uF 16V C47UF16V D5H7 1 2 R1784 NC R0603 SMD 1 2 C671 1500P C0603 SMD D175 1N4148 1N4148 SMD C672 1uF C0603 SMD Q62 MMBT3904 SOT23 1 2 3 C664 0 1uF C0603 SMD C689 0 47uF 50V C DIP C687 0 1uF 50V C DIP R1782 NC R0603 SM...

Page 48: ...48 ...

Page 49: ...49 10 TROUBLE SHOOTING GUIDE 10 1 Simple check 10 1 1 LCD is not bright 10 1 2 No picture ...

Page 50: ...D1 10 1 3 No sound First check cables which connect with PSU then check as follows 1 Check input voltage as NO picture 2 Check speaker output 10 2 PSU failure check State No power First check cables which connect with PSU then check as follows 1 Check PSU input voltage AC input CN1 2 Check PSU output voltage orderly CN2 ...

Page 51: ...CP Sunken TCP lead cracking ACF bonding short Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure Failure Mode Part Name Description Phenomena Failure cause Dot Defect Bright dot dark dot in panel Incoming Inspection Standard Polarizer Bubble Bladder in Polarizer Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratc...

Page 52: ...rge current and EDS FIIcker Crosstalk LCD Vcom imbalance Abnormal Color Only color abnormal Capacitance improper bring crosstalk inside LCD panel Circuit Abnormal Color Only color abnormal 1 Chip lose action 2 IC short or joint bad 3 Panel and VSC connect bad Failure Mode Part Name Description Phenomena Failure cause Mechanlcal Nolse When turn panel appear cacophony Caused by Mechanica noise of ba...

Page 53: ...down B L shutdown in sometime Short between lamp housing and wire Because consume power too much F M F M in B L white back Rotundity or wire like F M in B L unit Failure Mode Part Name Description Phenomena Failure cause Light leakage Brightness at bottom of LCM brighter than normal B L unit badness Uniformity B L brightness asymmetric Sheet in B L unit is uneven Mechanlcal or B L Mount hole Lack ...

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